Improvement in machines for cutting files



UNITED STATES PATENT OEEroE.

F. SOHULTZ', OF HOBOKEN, NEW JERSEY, AND O. RENNE, OF NEW YORK, N. Y.

IMPROVEMENT IN MACHINES FOR CUTTING FILES.

Specification forming part of Letters Patent No. 90.788, dated June l, 1869.

To all whom it may concern.'

Be it known that we, F. SCHULTZ, of Hoboken, Hudson county, New Jersey, and O. RENNE, of the city, county, and State of New York, have invented an Improved File-Gut# ting Machine; and we do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, referencebein g had to the accompanyingdrawings, forming part of this specification.

Figure l represents a vertical longitudinal sect-ion of our improved ile-cuttin g machine, taken on the plane of the linewaz, Fig. 2. Fig. 2 is a horizontal section of the same, taken on the plane of the line y y, Fig. 1. Fig. 3 is a detail vertical transverse section of the same, taken on the plane of the line z z, Fig. 2.

Similar letters of reference indicate corresponding parts.

This invention relates to an improved machine for cutting iiles, which is of such simple l construction and arrangement that it cannot readily get out of repair, and that it can be manufactured at a cost much less than that for which iilecutting machines can now be made.

The invention consists, first, of an improved mechanism for moving the sliding table on which the blank to be cut is supported, and which operates automatically to give the requisite feed to the blank.

The invention consists, secondly, in a novel construction of cutter-holder, the same being provided with a cross-slot, toretain a cutter in di tl'erent positions.

VmThe invention, iinally, consists in the general combination of parts for operating and feeding the apparatus.

A in the drawing represents the stationary frame of our improved Ele-cutting machine. Itis composed, chiefly, of two side posts or supports, a a, which are provided with horizontal or inclined guideways b b, for the supporting of the movable bed B, and which are onnected and braced by suitable cross-bars nd stays.

B is the bed for supporting the file-blank. -s front part is, by means of belts or chains C, connected with a horizontal shaft, D, ich has its bearings in the posts a below e bed, and which, when revolved in the direction of the arrow l, winds the said belts or cords around itself, thereby moving the bed B backward.

A toothed wheel, E, is mounted upon one end of the shaft D, and into its edge meshes a tooth or teeth, c, formed on a disk, d, of the horizontal driving-shaft F.

The said shaft F has its bearings in the posts a, somewhat above the bed B, as shown,

and receives rotary motion in the direction of the arrow 2 by suitable mechanism. When thus revolved it imparts intermittent rotary i motion to the shaft D, and thereby draws the carriage gradually backward, producing thus the requisite feed.

The feed-motion is regulated by the size and number of teeth of the wheel E, and by the number of teeth on the disk d.

Springs G G are interposed between the back .edge of the bed B and ixed lugs e on the frame A, as shown. They serve to hold the bed forward, and to keep the belts or chains By raising the pawl off the wheel H the springs will be at liberty to push the bed forward, and to unwind the belts or chains C from the shaft D, so as to bring the bed into position for commencing operations on another blank.

The ileblank I is fastened upon a bar, J, which is of semi-cylindrical, or nearly such, shape, as in Fig. 3, and which is placed into a hollow depression formed in the bed B, so that it can rock therein. It has projecting e'ars g g at both ends, tted within lugs h, that project from the bed, and is clamped by means of set-screws i', which fit against the ears g, so as to hold it somewhat, but not quite, firm, allowing it to rock in its support. The ends of the blank I are tted into notches of the ears g, as shown in Fig. l.

The tool K, for cutting the file, is secured to an arm, L,Which is pivoted to a cross-bar, M, of the frame, or fastened to a pivoted crossbar, M, as may be desired. Itis held up by a spring, j. The arm L has a cross-shaped slot for receiving the tool in either position. One of two set-screws, l, clamps the tool in the arm L.

N is the hammer. It is sufficiently heavy to cause the requisite indentation to be made by its fall, and is fitted through an upper crossbeam of the frame, working between frictionrollers m, as shown. An arm, u, projects from the hammer over a cam, o, on the shaft F. This cam is a concentric disk with a reetan gular recess cut out, as shown. The arm u of the hammer rests on it.

When the hammer falls upon the upper end of the cutter K its arm will'be direetlyover the then horizontal straight plane lo of the cam, and as the cam revolves with the shaft F its plane p will at once elevate the hammer as soon as it has fallen. The cutter is then also at once drawn up bythe spring j, and the file-blank is thereby liberated as soon as it has received an impressiomto be fed along with the bed B for another impression.

The disk O, when it is With its circular edge under the arm n, holds the hammer at its most elevated position until the arm n slips off the edge r of the disk, when the hammer will be no more supported and will drop upon the cutter, to cause another impression to be made.

The whole machine is,it will be seen, of very simple construction, entirely automatical in its operation, not likely to get out of repair, and can be cheaply made.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is

l. The combination of the belts or chains C, shaft D, and toothed wheel E with the disk d, shaft F, ratchet-wheel H, pawl f, and springs Gr, all arranged and operating to impart the requisite feed-motion to the sliding bed B, substantially as herein shown and described.

2. The cutter-holder L, when provided with a cross-slot, and with two set-screws, l, or their equivalent, for the purpose of holding the cutter K in either position, substantially as herein shown and described.

3. An improved file-cutting machine, consisting of the frame A, movable bed B, belts or chains C, intermittently-rotating shaft D, shaft F, springs Gr, ratchet-wheel L H, pawl j', cam o, hammer N, spring cutter-holder L, cutter K, and rocking support J, all combined and operating substantially as herein shown and described.

F. SCHULTZ. C. RENNE.

Witnesses:

FRANK BLoeKLnY, ALEX. F. ROBERTS. 

